Analog Microelectronics AME385CEET, AME385AEHA, AME385AEET, AME385AEAT, AME385AEAS Datasheet
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Analog Microelectronics, Inc.
AME385-1.2
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n General Description
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The AME385-1.2 is a micropower 2-terminal band-gap
voltage regulator diode. It operates over a 15µA to 20mA
current range. Each circuit is trimmed at wafer sort to
provide a ±0.2% and ±0.5% initial tolerance. The design of the AME385-1.2 allows for a large range of load
capacitances and operating currents. The low start-up
current makes these part ideal for battery applications.
Analog Microelectronics offers this part in a TO-92 and
SO-8 packages as well as the space saving SOT-23.
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n Applications
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l Portable electronics
l Power supplies
l Computer peripherals
l Data acquisition systems
l Battery chargers
l Consumer electronics
Micropower Voltage Reference Diode
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n Key Features
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l Small packages: SOT-23, TO-92, SO-8
l Tolerates capacitive loads
l Fixed reverse breakdown voltage of 1.235V
l Tight voltage tolerance ---------- ±0.20%, ±0.5%
l Wide operating current ---------- 15µA to 20mA
l Wide temperature range -------- -40
l Low temperature coefficient --- 100ppm/
l Excellent transient response
o
C to +85oC
o
C (max)
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n Functional Block Diagram
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VR
Bandgap
Cell
Feedbac k
GND
1
Current
Shunt
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n Typical Application
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VS
RS
VR
1000pF
V alue opt ional
RS =
VS - VR
I
VR = 1.235V
I
Analog Microelectronics, Inc.
AME385-1.2
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n Package Outline
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SOT-23 Top View TO-92-3 Bottom View TO-92-2 Bottom View
NC *
+-
SO-8 Top View
1
NC
NC
2
3
NC
4
-
* The NC pin must float or be connected to - (nega-
8
7
6
5
+
NC
NC
NC
tive)
NC *
Micropower V oltage Reference Diode
-
+
+-
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n Ordering Information
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Par t Number Accurac y Marking Package Operating Temp. Range
AME385CEET 0.2% ACQww SOT -23
AME385CEHA 0.2%
AME385AEAS 0.5%
AME385AEAT 0.5%
AME385AEET 0.5% ABXww SOT-23
AME385AEHA 0.5%
Please consult AME s ales office or authoriz ed Rep./Dis tr ibutor for other voltage ac curac y and
pac kage type availability.
AM E
385CEHA
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AM E
385
AEAS
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AM E
385
AEAT
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AM E
385AE HA
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SO-8
TO-92-2
TO-92-3
SO-8
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
2
Analog Microelectronics, Inc.
AME385-1.2
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n Absolute Maximum Ratings
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Parameter Maximum Unit
Supply Current 50 mA
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n Recommended Operating Conditions
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Parameter Rating Unit
Supply Current 100µA ~ 20mA
Am bient Temperature Range -40 to +85
Juncti on Temperature -40 to +125
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n Thermal Information
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Micropower Voltage Reference Diode
o
C
o
C
Parameter
SO T-23 325
Therm al Resistance
M axim um Junction Tem perature 150
M axim um Lead Tem perature ( 10 Sec) 300
Caution: Stress above the listed absolute rating may cause permanent damage to the device
TO-92 180
SO -8 125
Maximum Unit
o
C / W
o
C
o
C
3
Analog Microelectronics, Inc.
AME385-1.2
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n Electrical Specifications
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Unless otherwise specified, TA = 0 ~70oC, I
=
R
Micropower V oltage Reference Diode
100µA
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
Reference Voltage, ±0.2% 1.232 1.235 1.238 V
V
REF
Reference Voltage, ±0.5% 1.229 1.235 1.241 V
Minimum Current I
Reference Voltage Change With
Current
Maximum Ope ration Current IL
dV
MIN
REF/I
max
Revers e Dy nam ic Impedence RDI I
I
100µA
=
REF
15
I
< I < 1mA 1.5 3
MIN
1mA <
I < 20mA 5 20
20 mA
= 100µA, f=20Hz 1.5 Ohm
R
µ
mV
A
Wideband Noise (rms) Vn I
Long term Stability
Reference Volt a ge Temp. Coeff. V
REFTC
= 100µA, 10 Hz<f<10K Hz 60
R
I
= 100µA, TA=25OC,
R
20 ppm
V
µ
T=1000 Hours
0oC < TA < 70oC100
ppm/
o
C
4
Analog Microelectronics, Inc.
AME385-1.2
Normalized Percentage Change vs.
0.1
0
-0.1
OUT
-0.2
-0.3
-0.4
% Change of V
-0.5
-0.6
-50 0 50 100 150
100µA
Temperature
I = 100µA
( OC)
Reverse Characteristic
Micropower Voltage Reference Diode
Output V oltage Change vs. Current
2
1
(mV)
0
-1
0.0
Forward Characteristic
1.0V
1100
(mA)
I
R
10µA
85oC
1µA
100nA
0.0V 0.65V 1.3V
V
25oC
R
Transient Response
5V/DIV
V
IN
0.5V/DIV
VR
25oC
0.125V/DIV
85oC
0.0V
1µA
o
C
25
100µA 10mA
200µS/DIV
5
Analog Microelectronics, Inc.
AME385-1.2
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n Package Dimension
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SOT-23
Micropower V oltage Reference Diode
SY M BOLS
A 1.00 1.40 0.0394 0.0551
A
1
b 0.35 0.50 0.0138 0.0197
C 0.09 0.25 0.0035 0.0098
D 2.70 3.10 0.1063 0.1220
E 1.40 1.80 0.0551 0.0709
e
H 2.60 3.00 0.1024 0.1181
L 0.35 0.55 0.0138 0.0197
θ1
θ1
θ1θ1
R
MILLIME TE R S INCH E S
MIN MAX MIN MAX
0.00 0.15 0.0000 0.0059
1.90 BSC 0.0748 BSC
o
0
o
9
o
0
0.95(TYP) 0.0374(TYP)
o
9
SO-8
SYMBOLS
A 1.35 1.75 0.053 0.069
A
1
A2
B 0.33 0.51 0.013 0.020
C 0.19 0.25 0.007 0.010
θ
D 4.80 5.00 0.189 0.1970
E 3.80 4.00 0.150 0.157
e
H 5.80 6.20 0.228 0.244
L 0.40 1.27 0.016 0.050
y 0.10 0.004
θθθθ 0
MILLIMETERS INCHES
MIN MAX MIN MAX
0.10 0.25 0.004 0.010
1.45 REF 0.057 REF
1.27 BS C 0.050 BS C
o
o
8
o
0
o
8
6
Analog Microelectronics, Inc.
AME385-1.2
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n Package Dimension
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TO-92-3
Micropower Voltage Reference Diode
SYMBOLS
A 4.32 4.95 0.170 0.195
b 0.36 0.51 0.014 0.020
E 3.30 3.94 0.130 0.155
e 2.41 2.67 0.095 0.105
e1 1.14 1.40 0.045 0.055
L 12.70 15.49 0.500 0.610
R 2.16 2.41 0.085 0.095
S1 1.14 1.52 0.045 0.060
W 0.41 0.56 0.016 0.022
D 4.45 4.95 0.175 0.195
a
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY M OLD FLASHES
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
MILLIMETERS INCHES
MIN MAX MIN MAX
°
4
°
6
°
4
°
6
TO-92-2
SYMBOLS
A 4.32 4. 95 0.170 0. 195
b 0.36 0.51 0. 014 0. 020
E 3.30 3.94 0.130 0.155
e 2.41 2. 67 0. 095 0. 105
e1 1.14 1.40 0.045 0.055
L 12. 70 15. 49 0. 500 0. 610
R 2.16 2. 41 0.085 0. 095
S1 1. 14 1. 52 0.045 0. 060
W 0. 41 0.56 0. 016 0. 022
D 4.45 4. 95 0.175 0. 195
a
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY M OLD FLASHES
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
MILLIMETERS INCHES
MIN MAX MIN MAX
°
4
°
6
°
4
°
6
7
iii
www.analogmicro.com
E-Mail: info@analogmicro.com
Life Support Policy:
These products of Analog Microelectronics, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of Analog Microelectronics, Inc.
Analog Microelectronics, Inc. reserves the right to make changes in the circuitry and specifications of its devices
and advises its customers to obtain the latest version of relevant information.
Analog Microelectronics, Inc. , October 2001
Document: 2003-DS385-1.2-D
Corporate Headquarters Asia Pacific Headquarters
Analog Microelectronics, Inc. AME, Inc.
3100 De La Cruz Blvd. Suite 201 2F, 187 Kang-Chien Road, Nei-Hu Dist.,
Santa Clara, CA. 95054-2046 Taipei 114, Taiwan, R.O.C.
Tel : (408) 988-2388 Tel : 886 2 2627-8687
Fax: (408) 988-2489 Fax: 886 2 2659-2989
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